Effectively Managing Stripe Rust
Co-authored with Albert Tenuta, Pathologist, Field Crops| Field Crop News
Co-authored with Albert Tenuta, Pathologist, Field Crops| Field Crop News
Pre-harvest Management of Soybeans Many soybean fields are now beginning to yellow, which indicates they are at the R6 (full seed) growth stage. This means that green soybean seeds fill the pod cavity on one of the 4 top nodes. At this stage, pods have reached their full length and no new pods form. Root [...]Read More...| Field Crop News
This article was originally written by Joel Bagg in 2016. It was edited August 22, 2025 by Christine O’Reilly to fix broken links to further resources. With the dry weather this year and low forage yields across much of the province, many producers are looking for alternative forages. There is a lot of stressed corn [...]Read More...| Field Crop News
This article was originally written by Joel Bagg in 2012. It was edited August 22, 2025 by Christine O’Reilly to fix broken links to further resources. Dry weather during corn silking and pollination can significantly reduce grain yield expectations. Inadequate moisture can result in poor ear fill or even corn plants without any ear or [...]Read More...| Field Crop News
Resources for Evaluating and Salvaging Moisture Stressed Corn for Corn Silage Under exceptionally dry conditions, there can be corn fields which are severely moisture stressed to the point they will make very poor (or in some cases almost zero) grain yield (Fig. 1). Under these same conditions, forage yields on livestock farms may also be [...]Read More...| Field Crop News
Simple Summary– about two days after pollination, or a day after fertilization, corn silks degrade and detach from ovules (potential corn kernels) and provide the earliest indication of successful pollination/fertilization– the “shake test” – peeling back ear husks, giving it a tap and observing how many silks remain attached – can quickly provide an indication [...]Read More...| Field Crop News
This article was written by Emma Peel, a summer research assistant with OMAFA assisting with corn research and extension projects during the summer of 2025. Emma is an agriculture student at the University of Guelph Background Provided we are always planting into moisture, there can be various acceptable depths to plant corn depending on your [...]Read More...| Field Crop News
The 2025 AgSpray Expo; Innovations & Best Practices in Agricultural Spraying was a one-of-a-kind summer event that was not to be missed! July 23rd was a warm sunny day north of Brockville, ON, perfect for demonstrating sprayers, drones, and sensor equipment. With more than 120 people in attendance, smaller groups took in eight sessions that [...]Read More...| Field Crop News
The Ontario Cereal Crop Committee (OCCC) 2025 winter wheat preliminary trial data for Area 1 and 2 is now available at GoCrops.ca. The 2025 preliminary data can be found in the tables under “winter wheat” in the “performance trial results” tab at GoCrops.ca. The final winter wheat data and PDF report will be finalized at the upcoming OCCC meeting.| Field Crop News
Forages Before During After Pastures Before During After [...]Read More...| Field Crop News
Maximizing Rainfall Capture Through Soil Management The amount of rainfall that makes its way into soil, instead of running off, matters to maximize crop yields – especially in dry years. Thunderstorms often bring large amounts of water quickly, and not all soils perform equally in the time it takes to soak in for use by [...]Read More...| Field Crop News
There are areas of the province that have received little effective rainfall since early June. Dry and hot growing conditions can limit regrowth in hay fields and pastures. AgriStability compensation rate has been increased for 2025 and Agricorp has extended the deadline to apply to July 31, 2025. If you have questions about crop insurance [...]Read More...| Field Crop News
Lack of rains and hot temperatures have two spotted spider mites (TSSM) exploding in some fields. Scouting soybeans and dry beans frequently for TSSM this time of year is important, as infestations tend to be noticed too late from the road when management was required much earlier. Mite infestations typically start on the fields edge, especially close to freshly cut ditch banks and road sides or next to recently harvested wheat fields. Look for plants that are yellowing or look drought stress...| Field Crop News
Month: July 2025| fieldcropnews.com
Finding and Fixing Soil Compaction When it comes to spring seeding, there can be challenges on the weather and soil conditions fronts. Areas in Ontario that often struggle with planting conditions had crops planted under good soil conditions and in record time this spring, while other areas, even some with lighter soils, experienced delays due [...]Read More...| Field Crop News
This article was written by Jonathan Sawicki, a summer research assistant with OMAFA assisting with corn research and extension projects during the summers of 2023 and 2024. Jonathan is now an M.Sc. candidate in the School of Environmental Sciences at the University of Guelph. This article discusses the challenges Ontario agriculture faced in 2024 due [...]Read More...| Field Crop News
Bluegrass competition in winter wheat can result in yield losses of up to 50%. We reviewed current research to provide| Field Crop News
Photo: Scouting a few days after a spring frost is a good way to assess the severity of any damage.| Field Crop News
Winter wheat can often be found to survive short freeze thaw events throughout the winter. However, there are concerns about crop damage and survivability, particularly in those fields that were planted late last fall and those fields that were covered in ice for prolonged periods.| Field Crop News
Month: March 2021| fieldcropnews.com
Month: April 2025| fieldcropnews.com
Q: I’m seeing more henbit and/or purple deadnettle in my winter wheat crop? Should it be controlled and what can be done to control it? | Field Crop News
Flowering has begun in many winter canola fields. Two key pests in winter canola at this growth stage are cabbage seedpod weevil (CSW) and white mould (a.k.a. Sclerotinia stem rot). These are also both pests of spring canola, and the management recommendations are the same for both types of canola.| Field Crop News
Lutter contre la camomille inodore avec des herbicides| Field Crop News
Swede midge and imported cabbageworm observed in canola| Field Crop News
Soybean aphids (SBA) have been spotted in a few fields in southern Ontario that haven’t seen SBA in quite a few years. As soybeans begin to enter R1, weekly scouting is advised, focusing first on the earlier planted fields close to or in R1, as well as any that have not had much rain and may be moisture stressed. A reminder that SBA start as colonies in a few pockets in the field before becoming overcrowded and spreading themselves out more evenly across the fields. These highly infested pl...| Field Crop News
The start of this week has been marked by several days of well above normal temperatures – daily highs in the low to mid 30’s brings the first summer-like hot spell across much of Ontario. These temperatures have helped reduce the heat unit deficit that has been a hallmark of spring 2025.| Field Crop News
Year: 2025| fieldcropnews.com
Month: December 2024| fieldcropnews.com
Month: March 2013| fieldcropnews.com
Month: June 2025| fieldcropnews.com
The province experienced weather extremes. Southern Ontario saw warmer conditions that supported corn and soybean growth and helped dry fields still awaiting planting. However, wind and scattered rain complicated weed control efforts. In the Northeast and Northwest Ontario, temperatures neared 0°C, raising concerns about frost damage to emerged soybeans and white beans. Field assessments are ongoing.| Field Crop News
A cooler than average start to the growing season has added some uncertainty to post-plant nitrogen fertilization strategies for Ontario corn producers. Soil supply of nitrogen to the corn crop is likely lower than normal due to reduced N mineralization from both soil organic matter and manure, and the Maximum Economic Rate of Nitrogen (MERN) for a given field may be somewhat higher than an average year.| Field Crop News
It’s been a tough spring across much of Ontario and growers continue to face variable weather conditions, creating both opportunities and challenges across regions. Frequent rain events have delayed planting in parts of eastern Ontario, particularly on heavier clays from Belleville to Kingston and Essex which had up to 3” of rain last week halting soybean planting. Unfavourable weather has continued to challenge spray operations across much of the province. High winds have reduced the num...| Field Crop News
Month: May 2025| fieldcropnews.com
Have you been seeing increased corn rootworm pressure in your continuous corn fields over the last few years? Monitoring with sticky traps can help you determine if you have a Bt resistant corn rootworm problem and it helps us keep track of where these problem fields are. Thanks to GFO and ABSTC, we still have some free corn rootworm sticky traps to give away this year to any interested trap participants, new or experienced. Fields with a history of corn on corn and repeated CRW Bt hybrid use...| Field Crop News
The growth points of alfalfa and red clover are at the tips of the stems, so management recommendations depend on the amount of damage:Less than 50% growth points removed: wait to cut until planned harvest maturity. Expect reduced yields.| Field Crop News
This cooler, wet weather seems to have delayed plant growth but also has been ideal for pests to build in fields or do more feeding while the plant growth is slowed.| Field Crop News
Cooler than normal weather continued, with several overnight lows below 10°C. In the southwest, crop heat units (CHUs) are below normal and about 200 below last year on this date. Planting is progressing as soils become fit; however, crop emergence has been slow. | Field Crop News
Alfalfa weevil is a major alfalfa pest in Ontario. Larvae feeding on alfalfa leaves can reduce both yield and forage quality. | Field Crop News
Field work progressed quickly across the province in the past week, with sunny skies and warm temperatures peaking on Friday, May 16th before scattered showers and below seasonal temperatures began on the Victoria Day long weekend. Widespread rainfall slowed field activities beginning mid-week. Soil temperatures have generally been cool, resulting in slow crop emergence and growth.| Field Crop News
Interpreting the available nutrients in a fertilizer analysis| Field Crop News
Cereal leaf beetle (CLB) adults and eggs have been spotted at low levels in some of the YEN cereal sites being monitored this year. Best to scout fields with a known history of CLB activity soon and plan to check all cereal fields a few times over the next few weeks until the head is fully emerged to spot any infestations and injury.| Field Crop News
Field work has progressed quickly in the last week and a half. Soil temperatures are still cool, resulting in slow crop emergence. | Field Crop News
Co-authored with Albert Tenuta, Pathologist, Field Crops and Peter Johnson, Agronomist, Real Agriculture| Field Crop News
Black cutworm (BCW) and true armyworm (TAW) moths have been making their way into Ontario over the last few weeks. Black cutworm in particular have been arriving since mid April in southwestern Ontario, with trap counts increasing weekly. Shout out to our new northern Ontario trap participants at the New Liskeard, Thunder Bay and Emo Research Stations for monitoring BCW traps up there after last years significant cutworm infestations. It helps us keep an eye out for risk in that region. Thank...| Field Crop News
Variable weather conditions across the province over the last week have led to a range of planting progress. Areas of the southwest are well into spring planting, with some areas estimating over 50% of the crop acres planted, while others are just getting started with field work. Growing Degree Days (GDD) are behind last year, but are above or on par with the 10-year norm for most stations across the province.| Field Crop News
Winter triticale, barley, rye and wheat fields in many areas of the province are experiencing snow mould. Those regions that had significant snow coverage in particular, including but not limited to Bruce, Grey, Huron, Perth and Wellington counties are showing significant patches throughout fields. Those fields effected were generally planted early and had lots of top growth. There are also varietal differences with more susceptible varieties showing more severe symptoms.| Field Crop News
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Dr. Mary Ruth McDonald, pathologist at University of Guelph, and Keith Gabert, agronomist in Alberta with Canola Council of Canada, share their knowledge and experience working with clubroot disease of canola. Hosts Will Runnalls, chair of the Ontario Canola Growers Association, and Meghan Moran, canola specialist with OMAFA, ask these experts all the questions producers need answers to for successful management of clubroot in Ontario.| Field Crop News
The 2024 Ontario Corn Committee (OCC) hybrid performance trials are now available at GoCrops.ca (Link HERE). Over past decades, Ontario’s average corn yields have increased around 2 bu/ac/yr. Staying current with new and competitive yielding hybrids is important.| Field Crop News
Frost seeding or the broadcasting of forage seed on frozen ground in late-winter or early-spring can be an effective way of improving the forage quality and yield of thinning pastures. It allows for the establishment of forages at reduced cost in an undisturbed sod and also shortens the non-grazing period in the spring.| Field Crop News
